+ul_add_failed = Could not add '{FILE}' to the list of files in use.
+ul_rm_failed = Could not remove '{FILE}' from the list of files in use. Try it again using the 'unlock' command of Dev-Editor or by removing the file manually from '{USELIST}'.
+unlock_failed = Unlocking of '{USELIST}' failed. Ask the administrator to check the lock file ('{LOCK_FILE}') and to recreate it if necessary.